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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: I tend to agree with thorsten posted by Bob Meyer on May 29, 1999 at 07:29:18:
Then you might want to try some 89292 with some 82248, an 18 gauge solid core center wire in foamed teflon, this will tend to distribute resonances due to the different wire gauge, and the total equivalent gauge will now be 12 1/2 gauge. If you crossconnect the 18 gauge with the 14 gauge and then twist it, it will reduce the inductance to approx. one third that of the single twisted pair. However, the cross-connection must be done in a counterintuitive manner, let me describe:Looking at a clock dial, electrical cross-connection involves placing the same polarity wires across from one another. For instance, plus at 12 oclock, negative at 3 oclock, plus at 6 oclock, and negative at 9 oclock. In other words, for equal sized wires, you cross-connect the two opposite wires to the same polariy, in an electrical configuaration also known as star-quad wiring.
For these unequal sized wires, your first tendency would be to interleave the sizes, but this has the two 18 gauge wires on one polarity, and the two 14 gauge wires on the other, not a balanced or desirable situation, as the DCR is increased. You want the 14 and 18 gauge in parallel for each polarity. In order to do so, looking at the clock diagram, place the 14 gauge at 12 oclock, and again at 3 oclock, the 18 gauge at 6 and 9 oclock. Then you conncet 12 and 6 oclock together to form one polarity, and 3 and 9 oclock together for the other. This does make the cable array look lopsided, but it will be more electrically balanced, and the total DCR will at it's lowest.
Once again, the big benefit of doing this is to lower inductance to about a third of what it is with a simple twisted pair of 14 gauge wires. I can imagine that this might reduce some of that warmth that some have spoken of, and it should tighten and strengthen the deep bass a little more
Any way, another option for those enamored of solid wires.
BTW, just as with the 89292, the 82248 must have it's jacket, foil and braid removed in order to use just the foamed teflon core and center wires.
- - - - - - - - - - - - - - - - -
Tech America 1-800-877-0072Tech America will sell the cables they carry by the foot. If you
want to try some of the twisted pair interconnect, they carry several of Belden's teflon insulated cables, and some have a bare copper center wire.
NOTE: THESE CABLES ARE FOR USE OF THE CENTER WIRE
AND INSULATION ONLY! THEY ARE NOT RECOMMENDED
FOR USE WITH THE INCLUDED BRAID, OR FOIL AND BRAID
SHIELD! In an audio coaxial cable, the shield DOES carry the
return current, and is a factor in the quality of materials issue.part#910-1573, 86 cents a foot. (Is Belden 82248)
18 gauge solid bare copper in foamed teflon, insulation dia. .170"
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Follow Ups
- Re: I tend to agree with thorsten - Jon Risch 08:04:02 05/29/99 (1)
- Thanks for instructions. nt - Bob Meyer 08:31:40 05/29/99 (0)
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